计算机网络技术给人们的生产方式、生活方式和思维方式带来极大的变化,同时也日益暴露出了计算机网络安全问题,如个人信息的公开、重要文件的丢失、保密信息的泄露等一系列问题。本文论述了人为因素对计算机网络安全的重大危害,从而提出了在生活、工作中如何有效的进行人为防范的方法。详细阐述常见的计算机网络安全威胁,进而提出几种常用的网络安全防范措施. Computer network technology brings great changes to people’s mode of production, way of life and way of thinking, but also increasingly exposed the computer network security issues, such as the disclosure of personal information, the loss of important documents, the disclosure of confidential information and a series of problem. This article discusses the significant harm that human factors have to the computer network security and puts forward some effective methods of human prevention in life and work. Described in detail the common computer network security threats, and then put forward several commonly used network security precautions.